Expand UMA coverage for compositor-handled events and fling FPS

content/child/web_gesture_curve_impl.h

Index: content/child/web_gesture_curve_impl.h
diff --git a/content/child/web_gesture_curve_impl.h b/content/child/web_gesture_curve_impl.h
index cb0d0bfeef5622d9ceec617ad3fec299504eb9ed..026158ce9060d69d4195912b43e5023742b2627e 100644
--- a/content/child/web_gesture_curve_impl.h
+++ b/content/child/web_gesture_curve_impl.h
@@ -26,8 +26,9 @@ class CONTENT_EXPORT WebGestureCurveImpl
  public:
   static scoped_ptr<blink::WebGestureCurve> CreateFromDefaultPlatformCurve(
       const gfx::Vector2dF& initial_velocity,
-      const gfx::Vector2dF& initial_offset);
-  static scoped_ptr<blink::WebGestureCurve> CreateFrom(
+      const gfx::Vector2dF& initial_offset,
+      bool on_main_thread);
+  static scoped_ptr<blink::WebGestureCurve> CreateFromUICurveForTesting(
       scoped_ptr<ui::GestureCurve> curve,
       const gfx::Vector2dF& initial_offset);
 
@@ -38,13 +39,25 @@ class CONTENT_EXPORT WebGestureCurveImpl
                      blink::WebGestureCurveTarget* target) override;
 
  private:
+  enum class ThreadType {
+    MAIN,
+    IMPL,
+    TEST
+  };
+
   WebGestureCurveImpl(scoped_ptr<ui::GestureCurve> curve,
-                      const gfx::Vector2dF& initial_offset);
+                      const gfx::Vector2dF& initial_offset,
+                      ThreadType animating_thread_type);
 
   scoped_ptr<ui::GestureCurve> curve_;
 
   gfx::Vector2dF last_offset_;
 
+  ThreadType animating_thread_type_;
+  int64 ticks_since_first_animate_;
+  double first_animate_time_;
+  double last_animate_time_;
+
   DISALLOW_COPY_AND_ASSIGN(WebGestureCurveImpl);
 };